Rock Band - Rock Band is a Rhythm Music and Single and Multiplayer video game created by Harmonix and published by MTV Games.
Slack - A messaging app for teams who see through the Earth!
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.
Mattermost - Mattermost is an open source alternative to Slack.
World in Audition - World in Audition is an Addictive, Dancing and Music Simulation.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.